form2.cs

这是一个用txt文本实现数据库功能的小软件,具备新建,查询,修改等数据库基本功能,这对没有数据库的朋友是个不错的选择

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;

namespace htmlMaker
{
	/// <summary>
	/// Form2 的摘要说明。
	/// </summary>
	public class Form2 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.TextBox txbFilename;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Button open;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Label label5;
		private System.Windows.Forms.TextBox chaxun;
		private System.Windows.Forms.Button kaishichaxun;
		private System.Windows.Forms.OpenFileDialog openFileDialog1;
		private System.Windows.Forms.StatusBar statusBar1;
		private System.Windows.Forms.RichTextBox richTextBox1;
		private System.Windows.Forms.Button updata;
		private System.Windows.Forms.Button delete;
		private System.Windows.Forms.Button close;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form2()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.txbFilename = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.label1 = new System.Windows.Forms.Label();
			this.open = new System.Windows.Forms.Button();
			this.updata = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.label5 = new System.Windows.Forms.Label();
			this.chaxun = new System.Windows.Forms.TextBox();
			this.kaishichaxun = new System.Windows.Forms.Button();
			this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
			this.statusBar1 = new System.Windows.Forms.StatusBar();
			this.richTextBox1 = new System.Windows.Forms.RichTextBox();
			this.delete = new System.Windows.Forms.Button();
			this.close = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// txbFilename
			// 
			this.txbFilename.Enabled = false;
			this.txbFilename.Location = new System.Drawing.Point(80, 16);
			this.txbFilename.Name = "txbFilename";
			this.txbFilename.Size = new System.Drawing.Size(184, 21);
			this.txbFilename.TabIndex = 11;
			this.txbFilename.Text = "";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(24, 24);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(48, 16);
			this.label2.TabIndex = 8;
			this.label2.Text = "文件名";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(24, 96);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(56, 16);
			this.label1.TabIndex = 9;
			this.label1.Text = "查询结果";
			// 
			// open
			// 
			this.open.Location = new System.Drawing.Point(272, 16);
			this.open.Name = "open";
			this.open.Size = new System.Drawing.Size(32, 24);
			this.open.TabIndex = 16;
			this.open.Text = "...";
			this.open.Click += new System.EventHandler(this.open_Click);
			// 
			// updata
			// 
			this.updata.Location = new System.Drawing.Point(16, 208);
			this.updata.Name = "updata";
			this.updata.Size = new System.Drawing.Size(72, 24);
			this.updata.TabIndex = 17;
			this.updata.Text = "操作";
			this.updata.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(88, 208);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(72, 24);
			this.button2.TabIndex = 18;
			this.button2.Text = "修改";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(24, 160);
			this.label5.Name = "label5";
			this.label5.Size = new System.Drawing.Size(64, 16);
			this.label5.TabIndex = 19;
			this.label5.Text = "查询编号:";
			// 
			// chaxun
			// 
			this.chaxun.Location = new System.Drawing.Point(80, 152);
			this.chaxun.Name = "chaxun";
			this.chaxun.Size = new System.Drawing.Size(176, 21);
			this.chaxun.TabIndex = 20;
			this.chaxun.Text = "";
			// 
			// kaishichaxun
			// 
			this.kaishichaxun.Location = new System.Drawing.Point(264, 152);
			this.kaishichaxun.Name = "kaishichaxun";
			this.kaishichaxun.Size = new System.Drawing.Size(40, 24);
			this.kaishichaxun.TabIndex = 21;
			this.kaishichaxun.Text = "搜";
			this.kaishichaxun.Click += new System.EventHandler(this.kaishichaxun_Click);
			// 
			// statusBar1
			// 
			this.statusBar1.Location = new System.Drawing.Point(0, 246);
			this.statusBar1.Name = "statusBar1";
			this.statusBar1.Size = new System.Drawing.Size(320, 16);
			this.statusBar1.TabIndex = 22;
			this.statusBar1.Text = "statusBar1";
			// 
			// richTextBox1
			// 
			this.richTextBox1.Enabled = false;
			this.richTextBox1.Location = new System.Drawing.Point(80, 48);
			this.richTextBox1.Name = "richTextBox1";
			this.richTextBox1.Size = new System.Drawing.Size(224, 88);
			this.richTextBox1.TabIndex = 23;
			this.richTextBox1.Text = "";
			// 
			// delete
			// 
			this.delete.Location = new System.Drawing.Point(160, 208);
			this.delete.Name = "delete";
			this.delete.Size = new System.Drawing.Size(72, 24);
			this.delete.TabIndex = 24;
			this.delete.Text = "删除";
			this.delete.Click += new System.EventHandler(this.delete_Click);
			// 
			// close
			// 
			this.close.Location = new System.Drawing.Point(232, 208);
			this.close.Name = "close";
			this.close.Size = new System.Drawing.Size(72, 24);
			this.close.TabIndex = 25;
			this.close.Text = "退出";
			this.close.Click += new System.EventHandler(this.close_Click);
			// 
			// Form2
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(320, 262);
			this.Controls.Add(this.close);
			this.Controls.Add(this.delete);
			this.Controls.Add(this.richTextBox1);
			this.Controls.Add(this.statusBar1);
			this.Controls.Add(this.kaishichaxun);
			this.Controls.Add(this.chaxun);
			this.Controls.Add(this.label5);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.updata);
			this.Controls.Add(this.open);
			this.Controls.Add(this.txbFilename);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
			this.Name = "Form2";
			this.Text = "学生信息修改";
			this.ResumeLayout(false);

		}
		#endregion
		
		private void open_Click(object sender, System.EventArgs e)
		{
			statusBar1.Text = "打开文件";
			
			if (openFileDialog1.ShowDialog () == DialogResult.OK )
			{
				txbFilename.Text = (openFileDialog1.FileName);
				System.IO.StreamReader streamReader = new StreamReader(openFileDialog1.FileName,System.Text.Encoding.UTF8);
				string sLine = string.Empty;

				while((sLine = streamReader.ReadLine()) != null)
				{
					richTextBox1.Text += sLine + "\r\n";
				}

				//richTextBox1.LoadFile (streamReader.BaseStream ,RichTextBoxStreamType.PlainText);
			}	
		}
        private int FindPlace = 0;//从头开始找起
		private void kaishichaxun_Click(object sender, System.EventArgs e)
		{
			statusBar1.Text = "正在查找中.....";
			if (chaxun.Text == "")
			{
				MessageBox.Show("请输入要查找的内容！","警告",MessageBoxButtons.OKCancel,MessageBoxIcon.Warning);
			}
			else 
			{
				Form2 mainForm =(Form2)this.Owner;
			if (richTextBox1.Text.Length == 0)       //如果文本内容为空，则提示错误，内容为空。
			{
				MessageBox.Show("要查找的文本内容为空，不能查找！","错误提示",MessageBoxButtons.OKCancel,MessageBoxIcon.Warning);
			}
			else   //查找。。。。
			{
				if ((FindPlace = richTextBox1.Text.IndexOf (chaxun.Text ,FindPlace)) == -1) 
				{
					MessageBox.Show ("查找结束,没有搜索到你所要找的内容！","查找结果");
					FindPlace = 0;	//没有找到，重置查找位置为文本起点
				}
				else
				{	
				    richTextBox1.Select(FindPlace,chaxun.Text.Length);
					//找到了，置查找位置为下一个位置
					FindPlace = FindPlace + richTextBox1.Text .Length ;
				    Activate ();
				}
				}
			}
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			
			  richTextBox1.Enabled = true;
		
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			//richTextBox1.SaveFile(openFileDialog1.FileName);
			bool GenerateCode = true;
			if( GenerateCode )
			{
				statusBar1.Text = "文件保存成功" + txbFilename.Text;
				richTextBox1.SaveFile(openFileDialog1.FileName,RichTextBoxStreamType.PlainText );
			}
			else
			{
				statusBar1.Text = "文件保存失败！";
			}
		}

		private void delete_Click(object sender, System.EventArgs e)
		{
			if (richTextBox1.SelectedText != "" )
			{
				richTextBox1.SelectedText="";
				richTextBox1.SaveFile(openFileDialog1.FileName,RichTextBoxStreamType.PlainText );
				statusBar1.Text = "文件保存成功" + txbFilename.Text;
			}
		}

		private void close_Click(object sender, System.EventArgs e)
		{
			this.Hide();
		}
	}
}